I can’t spend upwards of $100,000, or more, on new equipment; is used equipment an option?
Steer away from used equipment except in two situations. The first is when it is being provided by the vendor, has been reconditioned and certified, and includes vendor training, support, and a minimal warranty. The other situation is if you have personal experience using and programming that exact type of equipment. (Always be careful and take steps to protect yourself when buying used equipment. Also, be aware when buying used equipment from unknown individuals, that a small minority are unscrupulous and could cheat you or provide less than what you expect.